MKM Partners upgraded shares of Hyatt Hotels (H) from a neutral rating to a buy rating.

Macquarie upgraded shares of Halliburton (HAL) from a neutral rating to an outperform rating. Macquarie now has a $38.00 price target on the stock.

Jefferies Group initiated coverage on shares of Starwood Hotels (HOT). They issued a buy rating on the stock. They wrote, "We find a lot to like about Starwood. An asset-light operator, the company has a strong domestic heritage, but the business is evolving towards faster-growing Emerging Markets. Starwood comes top on our qualitative Jefferies Scorecard. The company stands on 10.3x FY13E EV/EBITDA, an 8% discount to Marriott, despite its more positive attributes. Our price target offers 17% upside potential."

Jefferies Group upgraded shares of Infineon Technologies AG (IFNNY) from an underperform rating to a hold rating.

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